At the National Museum of Ethnology, in Osaka, Japan, it's claimed that an inner, stretchy layer of a hijab is referred to by Malaysians as a "ninja", and that it was thus named based on the clothing ninjas wore.
I'm aware of non-Muslims referring to wearers of various headwear as ninjas, but not of this.
Do Muslims non-ironically refer to a part of their hijab as a "ninja", and was it etymologically derived from the Japanese word "ninja"?